Method of manufacturing veneered lumber



Feb. s 192e. 1,572,247A

B. C. ROCKWELL METHOD 0F MANUFACTURING VENEEREDLUMBER Filed Jan. 50,1924 a l l //6 lkw/Zier da wif z Patented Feb. 9, 1926.

UNITED STATES PATENT OFFICE.

BYRI) C. ROCKWELL, OF SCE'.y JOSEPH, MSSOURI.

METHOD OF MANUFACTURING VENEERED LUMBER.

Application filed January 30, 1924. Serial No. 689,508.

To all whom t mayconceff'n' Be it known thatI, BYRD C. RooiwELL, acitizen of the United States, iesiding at St. Joseph, Missouri, haveinvented a cer-v v tain new and useful Improvement Methods ofManufacturing Veneeied Lumber, of which the following is aspecification, suoli as will enable others skilled in cost and have theappearance of the more' expensive door jainbs made of solid high gradelumber, and to provide a method of manufacturing said door jambs, methodcan be easily practiced and is highly ,eiiicient v Further objects ofthe invention are to provide a method of manufacturing veneeied lumberwherein to a core or body portion of low grade lumber are applied veneersections Vof high grade lumber and the whole is then properly linishedor dressed so as to leave clear veneer edge portions and a .finishedveneer face portion or portions. f

Still further objects of the invention are to provide an improved methodof manufac` turing veneered lumber consisting in form ing grooves in theface and edges ot a core or body portion of low grade lumber, in-

serting in said grooves veneer strips of high` grade material, one ofthe walls of each.

groove being formed beveled whereby the glue face of the veneer strip iswedged and held under pressure against the glue wall of` the groove,applying a veneer face section to the face portion of said core body,and then dressing the composite lumber so as io'finish and leaveexposedsaid veneerl edge strips and said face veneer portion.

lVith these and other objects in view, my invention consists in certainnovel features of construction and arrangement of parts, hereinaftermore fully described and claimed, and illustrated in the accompanyingdrawings, in which- Figure 1 is aperspective detail View of a which ycore or body portion of low grade material with the grooves formedlongitudinally in the tace and edges thereof. j

Figure 2 is a cross section showing the veneer edge strips glued inposition in said Grooves. i3 n ligureo is a similar view showing thedoor stop face veneer section secured in..

position thereon.

Figure 4 shows the core body channeled or rabbeted at its edges and thedoor stop veneer edge strips and veneer face section dressed.

Figure 5 is a cross section througlithe completed door jamb and showingthe veneer face sections applied to the rabbeted portions of the corebody.

Figure 6 is aV detail view of a modified form ofdoor jamb. j

Figure 7 is a perspective detail View showing Ahow the edge veneerstrips are made.

Figure. 8 is atletail View showing a modiv fied method 'of securing theedge veneer strips in position.

The present invention relates particularly to the manufacture of doorjainbs and it is the .purpose of the invention toprovide a methodwhereby door jambs Ycan be manufactured out of'stock `of inferiorgradcof lumber and have their face portions andthe exposed portions of theiredges linislied with veneer material of high grade lumber.y

Referring by numerals 'to Vthe accompany? ing drawings. lOindicates abody or core section of the door jambs formed of sound lumber ofinferior grade. The face and edges of this core section are providedwith grooves ll and l2, respectively, which are longitudinally formedtherein. Grooves l1 are spaced a suitable distance from the edges la ofthe core section and their outer walls are formed .sloping inwaidlyanddownwardly as indicated at lla. Grooves l2 are spaced a suitabledistance inwardly from the face of the core section andtheir wallsremote from said face are formed sloping inwardly as indicated atlZa.

Veneer edge strips l5 are placed in grooves ll and are secured thereinby a suitable adhesive applied to the straight or inner sides ofY saidstrips and to the inner walls of said grooves as indicated at A. Thesestrips are preferably formed wedgesha-ped having'v inclined sides aWhich are designed vto co-' opeiate with the sloping Walls 11a ofgrooves 11. Thus when the vstrips are placed in their respective groovesthe Wedgingco-actionfof i the inclined Walls 11L and sides 15a forcesunder pressure the glue faces of the strips in close contactWith'theglue VWalls `ofthe grooves, thereby forming la secureandneatjoint. m

In a similar manner veneer edge strips 16 are secured in positions ingrooves 12 forined in the edges 1li but in this case the glue is appliedto .tliesloping faces 1G of strips 1G and the inclined Walls of grooves`12v as indicated at A door stop face veneervsectioiilf( is new applied`by a suitable adhesive to the face oit core section n `10, `said vfaceveneer: section extending between vthestrips 15 .and having its side.edges terminating flush with the outer edges of said strips as indicatedin Figure 8. .The remaining portions 10a of the facey of said coremember.. are now removed channeling or rabbeting as indicated in dottedlinesin Fig- .ure3. The .depth of ,thesechannels is arranged so. .as .toremove sii'fcient material y from the edges .of said core body so as toform a door rstop .10b` and expose the unglued facesofedge strips 16 asyshown in Figure 4. In width thechannels A.extend inwardly a suicientdistance to pei'initfthe dressing or finishingof .the unglued inclinedfaces of the face strips 15 and of the edges :ofthe .face veneersection17 ias shown in Figure a.

Thus the door stop portion 10b is provided.

on its face with a face veneer section 17 While lthe .edges,..ofsad doorVstop portion. have se- .n .cu-red. thereto thedressed yportionsoflfface stripsln.

In nbbeting .the core body l0, undercut .grooves 18-are formed belowface strips LThese'[grooves lextend inwardly and are slightly inclineddownwardly andv serve to vreceive.;the inner edges. of the iainb faceveneer .sections .19- Which, are glued to the( faces tif-.the rabbetedportions as shown in Figure '5 and 4haye their outer edges over lyingtheedge stripslt and terminate flush Lwith the outer face thereof. Theseouter faces, Yas well as the outer edges of said vejneer sections y19,are then dressed and in .ished in proper l manner.

Finishing strips20 may now be` applied to .the edges of the `coresection so as to cover .the exposed portions ofY said core member,r

the edges .andfside finishing strips adjoining ,the outii'ardlytpresented faces of edge strips Y 16 las shown inFigure 5.v

Inl Figure 6 the door iainb Vis. shown with-` out thedoor stop portion.The core member .21 is V.provided Witlngrooves in its edges.adiacenttoiits face,l in ,which ,grooves are `se cured .edge strips2.4.v A face veneer strip 25.

v`is then iapplied to-tlie face of said ycore meinber and vfinishingstrips 26 are secured to the4 stead ofivbeing formed Wedge-shape incross `section are formed rectangular and are securedin'positiou in thegrooves of the core member l() bynieansof reiiioi'able Wedges 29. Y Thismodified method is particularly d ltble Where it is desired toavoidiraste inc Vdental .to dressing the veneer strips and thefaceportion of the core inen'ibc-r.v

l. The method `ofmanufacturing veneei'ed.

lumber consisting of forminglongitudinally disposed gi'ooif'es in a corebody wof, loiv ygrade lumber, gluing finishing veneer strips inf saidgrooves to forni .the exposed edges of :the veneered lumber,V andapplying a face `veneersection :tothe'face .of said core bodyivithitlieside edges of saidface veneer sectioniiush with ythe(interfaces of said veneer strips. i

2. The method rof inanufacturing veneered lumber consisting inY for-minglongitudinal grooves in a core section ofloiv grade lumber, securing:thereinveneer strips Aoffin-ishing v,material, securingY v,a ijeneer`face portion to the face of said core'K body ivit-h theedges of saidfaceveneersection adjoining said veneer. strips.

3. The, method of manufacturing veneered.

lumber ,consisting ,ing forming longitudinal grooves in acoresection-.of low gradeliimbei', securing therein veneer. strips .offinishingfinaterial, securinga veneer face vpor- .tio'n to the faceofsaidl core body with the.

edges of said face veneervseletion-adjoining said veneer strips, anddressing tlie.veiie er portions of the fiinisliedluinber,

i4. 4'lf-"he inetliodof manufacturing veneered lumber Vconsistinginforming longitudinally .disposedgrooves in the Walls `of a coreineinber, securing il'eneer-stripsof finishing luiiiber iii said;grooves,V applying a face .Veneer section of finishingluniber tti-saidcore body,

the .edgesf said face veneer section being arranged vadjacent to theouter faces of said veneer strips, y. y

The `niet-liod'of manufacturing venecied lumber consisting in forminglongitudinal. grooves in `the face and the'edges of a .core body ofinferior Alumber,l applying veneer strips of finishing--luniberrinysaidgrooves,

rabbetingthe sides of said core-bodyf said `rabbeted portions Y being..cofextensive With the `.veneerstrips arranged in the face vandvfsidesmoffsaid core body andfapplying -face veneer fsectioiisfto isaidcore body, the @dees 'of said face Veneerf sectio iis `oi'f'erlying-tlie edgesof the respective veneerstrips `rabbeted portions of saidcore body.

'1. The method oi' manufacturing veneered lumber consisting in forminglongitudinal grooves in the face and the edges of a core body, each ofsaid grooves having an inwardly inclined Wall, gluing veneer edge stripsin said grooves, said strips being placed under pressure during' thegluing process by virtue of the inclined Walls or' said grooves, andapplying a face veneer section to the face of said core body.

8. The. method of manufacturing veneered lumber consisting in forminglongitudinal grooves in the face and edges of a core body of lou1 gradelumber, securing veneer edge strips in said grooves, applying a faceveneer section to a portion of the face of said core body, said veneersection being co-eXtensive with the veneer strips arranged in the faceof said core body, rabbeting the remaining face portions of said corebody, said rabbeted portions extending adjacent to said veneer strips,and applying faceveneer sections to the faces of the rabbeted portionsof said core body, there being undercut grooves Jfoi-ined in said corebody to receive the inner edges of the last mentioned face veneersections.

In testimony whereof I hereunto affix my signature this 21st day ofJanuary, 1924.

vBYRD C. ROCKWELL.

